Damper



(ModeL) 3 SUTPHE N.

Damper.

Pate nted March 1,1881.

ess es:

' an inner-edge view of the disk, showing the UNITED STATES PATENT OFFIE;

GEORGE E. .SUTPHEN, or AURORA, ILLINOIS.

DAMPER.

SPECIFIGATIOlN' forming part of Letters Patent No. 238,259, dated March1, 1881.

Application filed June 28, 1880. (ModeL) To all whom it may concern:

Be it known that I, GEORGE E. SUTPHEN, of Aurora, in the county of Kaneand State of Illinois, have inventedeertain new and useful Improvementsin Dampers; and I do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing bad to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

My invention consists in a novel constructionof the disk-damper, in anovel means for holding the same to place and for operating it, and inthe means whereby rattling is pre: vented and the improvements areadapted for stove-pipes and all other pipes in which dampers are used.

in the drawings, Figure l is a plan of my improved damper applied to ashort piece of pipe; Fig. 2, a transverse section of the same; Fig. 3,the self-griping forked handle detached 3 Fig. 4, a portion of thedamper, showing one of the grooves and the flaring holding-lugs inperspective; Fig. 5, an outeredge view of the disk and lugs, and showingthe converging ends of the grooves; and Fig. 6

divergent ends of the grooves.

A is the disk or damper proper, andB its removable bifurcated handle,and these, in connection with their peculiarities, presently to bedescribed, constitute, with the pipe 0, all the parts requisite tocomplete the device ready for use.

The disk A, I make of gray or common castiron, and the forkedself-griping handle B, I make of malleable iron, and both the damper andthe handle, when they come from the sand mold, are ready for use,requiring no finishing whatever, and no tools are needed to lit thepipe, and apply these parts thereto, except such as are found in anytin-shop. The disk has on its opposite faces similar radial grooves 01,extending from the periphery toward the center and, preferably,terminating at a central opening, 6, cast in the disk. The beds or basesof these grooves incline gently to each other toward the outer edge orperiphery of the disk, as seen in Fig. 7 ,and have their sides or edgesraised above the plane of the disk,as seen at ff. This diminishingthickness or wedge-shape from the center or opening 6 to the peripheryof the grooved part of the disk affords a wedging portion, to which thetines or bifurcated parts g of the handle B may closely hold themselveswhen applied to the disk, and so as not to he accidentally loosened ordislodged'in operating the damper by means of the handle, for thetransverse shape of the groove, in connection with a correspondingtransverse shape of the tines or members of the handle, prevents thetines from moving laterally, while the springing or elastic quality ofthe tines, acting on the wedge embraced between them, prevents anylongitudinal movement of the handle. This' springing quality of thefork-tines is due to the character of the malleable metal, and thetines, in the act of casting, will naturally close a little, and gen-'erally sufficiently toward each other to make a tight hold upon thewedge of the disk; or, if desired, a slight blow with a hammer may begiven them to effect such leaning toward each other. By these means amost perfect fit and union of the disk and handle are secured withoutrequiring any opening or sockets, pins,

or looking devices of any description.

On the edge of the disk, and cast integral therewith, are two outwardlyflaring or curved lugs or projections, h h, having functions and dutiespresently to be described; and at the opposite edge, and cast integralwith the disk, is a pintle, z, having a collar or head, j, at its innerend. The object of this collar or shoulder is, that when the damper isplaced within a pipe, and the pintle is inserted from within through asmall hole, It, therein, this collar j shall serve as a cap to closelycover the inside of this hole and prevent the exit of smoke or gases atthat point; and the collar or shoulder Z on the handle, when the latterhas been passed through the hole on in the pipe and pushed tightly toitsplace upon the disk, serves similarly to close upon its outside thishole 1% against the escape of smoke or gases at that point. This hole mis designedly made with an inwardly-projecting smooth rim or flange, a,struck up from the pipe, and which, in conj unction with the lugs It,helps to form a hearing guide or journal for the disk, these lugs ICC 'dle is applied to the disk, ready for use, the

journal is complete, and the whole is steady and the handle has nolateral play in the hole m, though the latter be made large. No jarringor rattling of the damper can take place from the action of the draft orin handling.

The distance between the outermostextremities of the curved lugs h 71,and the outer face of the collar j is a little greater than theintGIlOldlitlllQtBl of the pipe into which the disk is fitted.Therefore, when the latter is in position for use, this collar and-theselugs press sufficiently upon the pipe to insure the diskremaining in anyand every desired position to which it may be adjusted, and the handlealways aflords a perfect indicator of this position, so that no mistakecan occur in using it, for the handle must turn with the disk, and viceversa.

The central hole, 0, in the damper, in conjunction with the annularspace 29 between the disk and pipe, is of sufficient capacity to permitall the gases to escape up the pipe when the damper is closed. No gascan escape into the room, nor can an explosion take place.

The handle may be so made as to receive wood or other non-conductingmaterial for the purpose of protecting the hand while opening or closingthe damper.

The device is simple, cheap, and durable, and is easily packed forshipping or transportation, as the manufacturer and jobber need supplyonly two pieces-namely, the disk and the handle. The disk having noradial or other openings or breaks except the central hole, there is noweak point in it, and no liability to be broken in use, and in applyingor removing the handle there is no strain whatever imparted to the disk.

I claim- 1. In a damper, the removable self-griping' handle B, made in asingle piece with spring fork-tines g,adapted,in the manner described,to span, gripe, and hold upon the damper-plate, and having a collar, Z.

2. The radial and inclined diverging grooves on opposite sides of thedisk, by means of which the springing handle engages the disk and holdsitself thereto.

3. The described means for closing the openings in each side of thepipe, the same consistin g in the outwardly-pressed inner collar, j,located between the periphery of the damper and its journal or pintle03, combined with the projections h and inwardly-pressed outer collar,l, on a frictional holding-handle.

4. The outwardly-proj ectinglugs on the edge of the disk, and divergingfrom each other, combined with the inwardly-projecting or upturnedflange on the pipe, as and for the purposes described.

5. The combination of the forked graspinghandle B with a disk-damperhaving on its opposite faces the diverging grooves d d.

6. A cast-iron damper having at one side a journal or pin tle providedwith a collar adapted to close or cover the inner side of the pintleholein the pipe, and having at its opposite side the diverging lugs h h,adapted to bear against the inner surface of the pipe, as and for thepurpose described.

GEORGE E. SUTPHEN.

Witnesses R. P. GooDWIN, D. O. WINsLoW.

